11.11×6666+7778×33.33
25×32×125
34×72+34×28
38×101
27×[(263+37)÷50]
(105×12-635)÷25
9000÷125
①36×()
②1.3×37.5%+2.7×
③ [()]
④13÷()×
①250-250÷25×2
②18÷ ×
③5.2÷0.4÷2.5
④(34- )÷17
⑤4.3×1.75-1.75+ ×6.7
⑥ ×[(72.8-69.6)÷ ]